Why do my brakes go to the floor when I start my car?
Why do my brakes go to the floor when I start my car? The most common reasons why your brake pedal goes to the floor when you start your car is because of a brake fluid leak, a faulty master brake cylinder, or a faulty brake booster. How to know if the brake booster on a Ford F150 is bad? Start and idle the engine in your F-150 without touching the brake pedal. Let the engine idle for one minute, turn off the ignition and wait for another minute before proceeding on to the next step. Depress and release the...